RAM
sdram
ROM is an acronym for Read Only Memory. Read Only Memory is typically created by a technique either etches the data into a chip, or via a chip "programmer" which typically blows a set of tiny fuses inside the chip to encode the data (EPROM, or Electronically Programmable Read Only Memory). Read Only Memory is considered non-volatile since the data stored on this chip does not require power to retain the data. This is in contrast to many RAM technologies (Random Access Memory) which often, though not always, require power to "refresh" the data stored in the memory to prevent it's loss.
static
Yes it is. Volatile memory is computer memory that requires power to maintain the stored information; it retains data while powered, but when power is lost data is immediately lost.
it converts the request into binary digits ............... and its stores the data in a database. as a table format. The binary data can then be written onto a magnetic disc or tape. The data can also be held in a silicon chip, arranged with a grid of memory locations, called a memory chip. Some chips need power applied in order to hold data. RAM Others can hold data permanently, ROM Others can hold data semi-permanently, power is used to change the data and then it will hold it without. EPROMS. (Electrically Programmable Read Only Memory.
Technically speaking the term R.A.M (Random Access Memory as opposed to serially accessed) describes the method used to organise store and retrieve the information in a memory chip rather than its ability to retain information. If you mean the DRAM used in PC's then it is described as 'volatile memory'. i.e the data is lost when the power is removed to the chip. Any data memory medium which stores data after power is removed is termed non-volatile memory like flash memory. Note: There is currently no technology that can store data forever. Even Flash memory has a data retention period estimated to be around 10 years without error.
The HDD, or hard disc drive is one example of a drive that does not require power to hold its stored data.
cache memory
The time required by a processor to access data or to write data from and to memory chip is referred as access time.
The time required by a processor to access data or to write data from and to memory chip is referred as access time.
they have a micro chip and memory card
Memory Controller Chip